Tidal forcing on David Glacier and Drygalski Ice Tongue

During the 2005-06 Austral Summer, we carried out a joint observational campaign in the area of the David Glacier, South Victoria Land, with the aim of collecting simultaneous time series of geodetic and seismological data. We installed 7 temporary seismographic stations on rock outcrops surrounding...

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Bibliographic Details
Published in:Geophysical Research Letters
Main Authors: Casula, G., Danesi, S., Dubbini, M., Vittuari, L.
Other Authors: Casula, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italia, Danesi, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italia, Dubbini, M.; DIMeC, Università di Modena e Reggio Emilia, Vittuari, L.; DISTART, Università di Bologna, Cooper, A.K.; Stanford University, USA, Barrett, P.; Antarctic Research Center, NZ, Stagg, H.; Geoscience Australia, AU, Storey, B.; University of Canterbury, NZ, Stump, E.; Arizona State University, USA, Wise, W.; Florida State University, USA, Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italia, DIMeC, Università di Modena e Reggio Emilia, DISTART, Università di Bologna, Cooper, A.K., Barrett, P., Stagg, H., Storey, B., Stump, E., Wise, W., Stanford University, USA, Antarctic Research Center, NZ, Geoscience Australia, AU, University of Canterbury, NZ, Arizona State University, USA, Florida State University, USA
Format: Other/Unknown Material
Language:English
Published: The National Academy Press, Washington DC 2007
Subjects:
Antarctica
David Glacier
Tidal force
Geodetic observations
Seismicity
02. Cryosphere::02.02. Glaciers::02.02.05. Ice dynamics
Austral
Drygalski
Drygalski Ice Tongue
Ross Sea
Victoria Land
Antarc*
Online Access:http://hdl.handle.net/2122/4208
Description
Summary:During the 2005-06 Austral Summer, we carried out a joint observational campaign in the area of the David Glacier, South Victoria Land, with the aim of collecting simultaneous time series of geodetic and seismological data. We installed 7 temporary seismographic stations on rock outcrops surrounding the glacier and 3 temporary geodetic stations both on flowing ice and on rock. The seismic network registered a significant low-energy seismic activity, principally originated by ice creeping and basal stress at the interface between the ice and the bedrock. The geodetic stations allowed us to survey the glacier kinematics forced by the Ross Sea tides, and to infer the grounding line location. Here we show some details about data analysis and preliminary results. Published Santa Barbara, California 1.8. Osservazioni di geofisica ambientale reserved

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